What does code P1299 mean on Jeep vehicles?
A vacuum leak is detected with the IAC valve fully closed.
OBD-II Code Jeep
P1299 — Jeep — Vacuum Leak Found (IAC Fully Seated)
A vacuum leak is detected with the IAC valve fully closed.
Common symptoms
- Unstable idle
- stalling
Possible causes
- Vacuum leak
- damaged hoses
Initial recommendation
Inspect engine for vacuum leaks.
Safety notice
This information is for guidance only. Brand-specific codes may vary by model, year, engine, transmission and vehicle configuration. It does not replace a physical inspection or diagnosis by a qualified mechanic. If the vehicle is unsafe to operate, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine Jeep code P1299 with your vehicle's actual symptoms for more complete diagnostic guidance.
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